> A picture is worth a thousand words...here you go...(see > attachment of PPTC device) So it is the generic symbol of a temperature-dependent resistor? That is of course what a polyfuse is, but IMHO it does not read easily, for me that symbol reads as a temperature sensor, maybe I am just too inexperienced :). Wouter van Ooijen -- ------------------------------------------- Van Ooijen Technische Informatica: www.voti.nl consultancy, development, PICmicro products -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads